[Executor]

C'tis can handle indies just fine, Serpant dancers, chariots, swamp guards, elite warriors, all of them do very good against indies. Hell, look at my provinces if you don't think so.
C'tis does lack magic diversity but doesn't need a bless so you can easily take a rainbow or a SC pretender for early expansion and still have good scales.
They are absolute killers in research ( again the graphs) and plus they can make tons of skull mentors.
That gives a significant lead against any other nation in battle magic, so poison cloud, nether darts, terror, shadow blast, storm of thorns, soul drain... you pick, just put that heavy infantry in front, place a few snakes with standards and go crazy with spells.